When insurgency is used to describe a movement's unlawfulness by virtue of not being authorized by or in accordance with the law of the land, its use is neutral. For example, during the American Civil War, the Confederate States of America was not recognized as a sovereign state, but it was recognized as a belligerent power, and thus Confederate warships were given the same rights as United States warships in foreign ports. Where a revolt takes the form of armed rebellion, it may not be viewed as an insurgency if a state of belligerency exists between one or more sovereign states and rebel forces. There have been many cases of non-violent rebellions, using civil resistance, as in the People Power Revolution in the Philippines in the 1980s that ousted President Marcos.
As a concept, insurgency's nature is ambiguous. An insurgency can be fought via counter-insurgency warfare, and may also be opposed by measures to protect the population and by political and economic actions of various kinds, as well as propaganda aimed at undermining the insurgents' claims against the incumbent regime.
An insurgency is a violent, armed rebellion against authority when those people who are taking part in the rebellion are not recognized as belligerents ( lawful combatants).